28 WILSON EXPEDITION TO CHINA 
rato-dentata, supra flavo-viridia, glabra v. fere glabra nervis strigosis 
exceptis, subtus pallidiora, tota facie crispulo-villosa ad nervos pilis 
flavidis adpressis dense obtecta, 6-9 em. longa et 3.5-4.5 cm. lata; 
petioli graciles, 1.5-2 cm. longi, pubescentes. Cyma fere plana, e 
radiis 5-7 decussatis distantibus composita, strigosa; flores radiantes 
circa 2.5 cm. diam. sepalis 4 late ovalibus v. obovatis; calycis dentes 
florum fertilium triangulares; petala oblongo-ovata, apice cucullata, 
2 mm. longa; stamina inaequalia, minora petalis breviora, majora 
petalis paullo longiora; ovarium semisuperum; stylis 3 erectis. Cap- 
sulae maturae desiderantur. 
Western Szech'uan: Wa-shan, thickets, alt. 1500-2250 m., 
July 1908 (No. 2411). 
Closely related to H. zanthoneura Diels which is easily distinguished by the leaves 
being serrulate, narrower and larger and on the under side nearly glabrous except 
the strigose veins. 
Hydrangea Bretschneideri Dippel, var. setchuenensis Rehder, n. 
var. 
A typo recedit foliis majoribus ad 20 cm. longis et 11 cm. latis, venis 
saepe flavescentibus, petiolis densius pubescentibus, ramulis juniori- 
bus laxe et sparse pubescentibus, annotinis pallide brunneis lenticellis 
conspicuis instructis, cymis usque ad 25 cm. diam., laxis, convexis, 
interdum fere paniculiformibus. 
Western Szechuan: Wa-ssu country, Wén-chuan Hsien, thickets, 
alt. 2300-2700 m., July and November 1908 (No. 1323). Western 
Hupeh: Fang Hsien, rocky places, alt. 1800 m., August 1907 (No. 
2399). 
The Szech’uan and the Hupeh plants differ slightly; the former has the leaves 
generally ovate-oblong and approaches also in the somewhat darker color of the _ 
branchlets the type, while the leaves of the Hupeh plant are elliptic-oblong or 
oblong-obovate. 3 
Hydrangea Bretschneideri, var. lancifolia Rehder, n. var. 
A typo recedit ramulis cinereis lenticellis conspicuis instructis, — 
foliis oblongo-lanceolatis, supra Sparse strigosis, subtus tota facie 3 
on crispulo-villosis et ad nervos strigosis, 7-12 cm. longis et 2-3 _ 
em. latis. 4 
Western Szech’uan: Tachien-lu, thickets, alt. 2100-2400 m., 
June 1908 (No. 2412). 
This variety might possibly be considered a pubescent and narrow-leaved form 1 
= -i - zanthoneura, since it has almost the same kind of bark as var. Wilsonii of 
species. : 
